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Finding the Fourth Proportional to 144,879.80, 217,578.90 and 140,214.20

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Solution

The fourth proportional to 144,879.80, 217,578.90 and 140,214.20 is: 210,572.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,879.80 : 217,578.90 = 140,214.20 : x
  2. Step 2: Convert to fraction form
    144,879.80/217,578.90 = 140,214.20/x
  3. Step 3: Cross multiply
    144,879.80x = 217,578.90 × 140,214.20
  4. Step 4: Simplify right side
    144,879.80x = 30,507,651,400.38
  5. Step 5: Solve for x
    x = 30,507,651,400.38/144,879.80
  6. Step 6: Final answer
    x = 210,572.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.